For this installation in Aldwick, Bognor Regis, West Sussex we used 12 Phono solar 250w solar panels and a Power One 3.0 inverter. To maximise the roof area we installed the solar panel array in landscape orientation. At this installation we also installed an immersun. This device is a cost effective way to heat your water using the surplus electricity generated by the solar panels, redirecting it to the immersion heater in the hot water cylinder. The immersun reduces dependency on oil or gas to heat your water and if you are out during the day, it utilises the electricity that is being generated by the solar panels.